1
AP EAPCET 2021 - 19th August Evening Shift
MCQ (Single Correct Answer)
+1
-0

The protective power of a lyophilic colloidal sol is expressed in terms of

A
critical micelle concentration
B
standard reduction potential
C
gold number
D
oxidation number
2
AP EAPCET 2021 - 19th August Evening Shift
MCQ (Single Correct Answer)
+1
-0

Due to $$p \pi-p \pi$$ bonding interactions, nitrogen for $$\mathrm{N}_2$$. But phosphorus forms .................. and does not form a diatomic molecule.

A
$$P_5$$
B
$$P_3$$
C
$$\mathrm{P}_4$$
D
$$P_6$$
3
AP EAPCET 2021 - 19th August Evening Shift
MCQ (Single Correct Answer)
+1
-0

Identify the incorrect statements among the following?

(i) $$\mathrm{SF}_6$$ does not react with water.

(ii) $$\mathrm{SF}_6$$ is $$s p^3 d$$ hybridised.

(iii) $$\mathrm{S}_2 \mathrm{O}_3^{2-}$$ is a linear ion.

(iv) There is no $$\pi$$-bonding in $$\mathrm{SO}_4^{2-}$$ ion.

A
(ii), (iii) and (iv)
B
(i), (ii) and (iii)
C
(i) and (ii)
D
(iii) and (iv)
4
AP EAPCET 2021 - 19th August Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which statements among the following are correct about helium?

(i) Liquid helium is used to sustain powerful superconducting magnets.

(ii) Liquid helium is useful to carry low temperature experiments.

(iii) It is a heavy gas.

(iv) It is a flammable gas.

A
(i) and (ii)
B
(ii) and (iii)
C
(i) and (iv)
D
(iii) and (iv)
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